#include<iostream>
using namespace std;
void Swap(int *p1,int *p2)
{
	int tmp =*p1;
	*p1=*p2;
	*p2=tmp;
}
int main()
{
	int m = 3,n=4;
	Swap(&m,&n);
	cout<<m<<" "<<n<<endl;
	return 0;
}